Getting started with Laravel

I’ve been playing around with other frameworks and Laravel caught my eye. But every time I try to install it, I get an error.

Mcrypt php5 is required. Script php artisan clear-compiled handling the post-install-cmd event returned with an error

I know mcrypt for php is installed but I guess it’s not enabled. I found the solution athttp://stackoverflow.com/questions/19775012/my-composer-wont-update-completely-with-laravel-4-it-gets-stuck-with-artisan. Now I can continue to do the tutorial on http://laravel.com/docs/quick.